public PrgState execute(PrgState state)
{
MyIStack <IStmt> stk = state.getStk();
stk.push(snd);
stk.push(first);
return(state);
}
private PrgState oneStep(PrgState state)
{
MyIStack <IStmt> stk = state.getStk();
if (stk.isEmpty())
{
throw new MyStmtExecException("The stack is empty");
}
IStmt crtStmt = stk.pop();
try {
return(crtStmt.execute(state));
}
catch (MyException ex)
{
throw new MyStmtExecException("" + ex);
}
}
public void allStep()
{
PrgState prg = repo.getCtrPrg();
repo.clearData();
while (!prg.getStk().isEmpty())
{
try
{
oneStep(prg);
repo.logPrgStateExec();
}
catch (MyStmtExecException e)
{
Console.WriteLine("Exception is : " + e);
}
Console.WriteLine(prg.ToString());
}
}
public PrgState execute(PrgState state)
{
MyIDictionary <string, int> dict = state.getSymTable();
MyIStack <IStmt> stk = state.getStk();
try
{
if (exp.eval(dict) != 0)
{
stk.push(thenS);
}
else
{
stk.push(elseS);
}
}
catch (MyException ex)
{
throw new MyException("" + ex);
}
return(state);
}
